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text_eval.py
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text_eval.py
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# Copyright 2020 The PEGASUS Authors..
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Library for evaluating generative text models."""
import numpy as np
def ids2str(encoder, ids, num_reserved):
"""Decode ids."""
if num_reserved:
eos = np.where(ids == 1)[0]
if np.any(eos):
ids = ids[:eos[0]]
reserved_tokens = np.where(ids < num_reserved)[0]
if reserved_tokens.size:
split_locations = np.union1d(reserved_tokens, reserved_tokens + 1)
ids_list = np.split(ids, split_locations)
text_list = [
"<%d>" %
i if len(i) == 1 and i < num_reserved else encoder.decode(i.tolist())
for i in ids_list
]
return " ".join(text_list)
return encoder.decode(ids.flatten().tolist())